Both the Buf and ldv lists allow no more than half the minis in a squad to have a weapon, also if you look closely one of the buf is armed with a pistol/sawn off weaponry as all the melee armed minis have interchangeable hands.
Personally despite it making sense im not a fan as most melee squads are hard to win with and harder to model as most of the lovely footsore stuff is with firearms.
Also looking at the home guard lsit is it a misprint of can home guard not have he armadillo ad panjandrum?